At a former job, we reverse engineered the trading APIs of most American retail stock brokerages (Fidelity, E-Trade, Robinhood, TD Ameritrade, etc). We did it by rooting an iPhone and using Charles Proxy to grab the unencrypted traffic.
I learned a lot from that experience, and it's also just plain fun to do. We did get some strongly worded letters from Robinhood though, lol. They tried blocking our servers but we just set up this automated system in Digital Ocean that would spin up a new droplet each time we detected a blockage, and they were never able to stop us after that.
I learned a lot from that experience, and it's also just plain fun to do. We did get some strongly worded letters from Robinhood though, lol. They tried blocking our servers but we just set up this automated system in Digital Ocean that would spin up a new droplet each time we detected a blockage, and they were never able to stop us after that.
Fun times.